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// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
#define NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
#include <string>
#include "base/file_path.h"
#include "base/message_loop.h"
#include "base/task.h"
#include "base/timer.h"
#include "net/base/test_completion_callback.h"
// Re-creates a given test file inside the cache test folder.
bool CreateCacheTestFile(const wchar_t* name);
// Deletes all file son the cache.
bool DeleteCache(const wchar_t* path);
// Gets the path to the cache test folder.
std::wstring GetCachePath();
// Fills buffer with random values (may contain nulls unless no_nulls is true).
void CacheTestFillBuffer(char* buffer, size_t len, bool no_nulls);
// Deletes all files matching a pattern.
// Do not call this function with "*" as search_name.
bool DeleteFiles(const wchar_t* path, const wchar_t* search_name);
// Generates a random key of up to 200 bytes.
std::string GenerateKey(bool same_length);
// Returns true if the cache is not corrupt.
bool CheckCacheIntegrity(const std::wstring& path, bool new_eviction);
// Helper class which ensures that the cache dir returned by GetCachePath exists
// and is clear in ctor and that the directory gets deleted in dtor.
class ScopedTestCache {
public:
ScopedTestCache();
ScopedTestCache(const std::wstring& name); // Use a specific folder name.
~ScopedTestCache();
FilePath path() const { return FilePath::FromWStringHack(path_); }
std::wstring path_wstring() const { return path_; }
private:
const std::wstring path_; // Path to the cache test folder.
DISALLOW_COPY_AND_ASSIGN(ScopedTestCache);
};
// -----------------------------------------------------------------------
// Simple callback to process IO completions from the cache. It allows tests
// with multiple simultaneous IO operations.
class CallbackTest : public CallbackRunner< Tuple1<int> > {
public:
explicit CallbackTest(bool reuse) : result_(-1), reuse_(reuse ? 0 : 1) {}
~CallbackTest() {}
virtual void RunWithParams(const Tuple1<int>& params);
int result() const { return result_; }
private:
int result_;
int reuse_;
DISALLOW_COPY_AND_ASSIGN(CallbackTest);
};
// -----------------------------------------------------------------------
// Simple callback to process IO completions from the cache. This object is not
// intended to be used when multiple IO operations are in-flight at the same
// time.
class SimpleCallbackTest : public TestCompletionCallback {
public:
SimpleCallbackTest() {}
~SimpleCallbackTest() {}
// Returns the final result of the IO operation. If |result| is
// net::ERR_IO_PENDING, it waits for the callback be invoked.
int GetResult(int result);
private:
DISALLOW_COPY_AND_ASSIGN(SimpleCallbackTest);
};
// -----------------------------------------------------------------------
// Simple helper to deal with the message loop on a test.
class MessageLoopHelper {
public:
MessageLoopHelper();
// Run the message loop and wait for num_callbacks before returning. Returns
// false if we are waiting to long.
bool WaitUntilCacheIoFinished(int num_callbacks);
private:
// Sets the number of callbacks that can be received so far.
void ExpectCallbacks(int num_callbacks) {
num_callbacks_ = num_callbacks;
num_iterations_ = last_ = 0;
completed_ = false;
}
// Called periodically to test if WaitUntilCacheIoFinished should return.
void TimerExpired();
base::RepeatingTimer<MessageLoopHelper> timer_;
int num_callbacks_;
int num_iterations_;
int last_;
bool completed_;
DISALLOW_COPY_AND_ASSIGN(MessageLoopHelper);
};
#endif // NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
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